So we have to stablish a heat treatment process, and the associated machinery. We have to decide between two ways of heating systems:
-Joule effect heating
-Gas furnace
The price of the machines, both suited for a takt time of 30 seconds, is the same.
The cost of energy for the anual production is:
-Electrical: 141 150€
-Gas Furnace: 94 350€
Both of the machines require cooling at the same rate.
The gas furnace is a much bigger machine than the electrical.
It seems the Gas furnace is cheaper (cost-of-energy wise) than the electric one, but only by a small number, not enough to totally decide which one is better...
Is there anyone here experienced with the use of gas furnaces/electrical-resistance heating? how much "hidden cost" is involved in each one?
What process is more "problematic" from a manufacturing point of view?
